Note the commands listed in Table 11.13.
Troubleshooting Frame Relay networks isn’t any harder than troubleshooting any other
type of network as long as you know what to look for, which is what I’m going to cover now.
We’ll go over some basic problems that commonly occur in Frame Relay configuration and
how to solve them.
First on the list are serial encapsulation problems. As you learned recently, there are two
Frame Relay encapsulations: Cisco and IETF. Cisco is the default, and it means you have a Cisco
router on each end of the Frame Relay network. If you don’t have a Cisco router on the remote
end of your Frame Relay network, then you need to run the IETF encapsulation, as shown here:
RouterA(config)#int s0
RouterA(config-if)#encapsulation frame-relay ?
ietf Use RFC1490 encapsulation
RouterA(config-if)#encapsulation frame-relay ietf
TABLE 11.13 Verifying the Frame-Relay Encapsulation
Command Meaning
configure terminal Takes you to global configuration mode
encapsulation frame-relay Sets your Frame Relay interface encapsulation to Cisco
encapsulation frame-relay ietf Sets your Frame Relay interface encapsulation to IETF